WY Au, CS Chim, AK Wai Lie, A Pang, and YL Kwong. 2002. “Real-Time Quantification of the Multidrug Resistance-1 Gene Expression in Relapsed Acute Promyelocytic Leukemia Treated With Arsenic Trioxide”. Haematologica 87 (10). Pavia, Italy, 1109-11. https://haematologica.org/article/view/2527.